Popularity was never my Mistress, nor was I ever, nor shall I ever be a popular Man. This Book will make me unpopular.— But one Thing I know, a Man must be sensible of the Errors of the People, & upon his guard against them, & must run the risk of their displeasure sometimes, or he will never do them any good in the long run.
John Adams to James Warren, Grosvenor Square, London, January 9, 1787; from The Founders on the Founders (2008), ed. Kaminski
The book Adams refers to is Defences of the Constitutions of the United States (3 vols., London, 1787–88).